WO2019077880A1 - 携帯機及び認証システム - Google Patents

携帯機及び認証システム Download PDF

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Publication number
WO2019077880A1
WO2019077880A1 PCT/JP2018/031393 JP2018031393W WO2019077880A1 WO 2019077880 A1 WO2019077880 A1 WO 2019077880A1 JP 2018031393 W JP2018031393 W JP 2018031393W WO 2019077880 A1 WO2019077880 A1 WO 2019077880A1
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WO
WIPO (PCT)
Prior art keywords
unit
acceleration sensor
vehicle
portable device
acceleration
Prior art date
Application number
PCT/JP2018/031393
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
紳一郎 加藤
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to KR1020207010778A priority Critical patent/KR102339698B1/ko
Priority to DE112018004657.5T priority patent/DE112018004657T5/de
Publication of WO2019077880A1 publication Critical patent/WO2019077880A1/ja
Priority to US16/822,789 priority patent/US11390251B2/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/30—Detection related to theft or to other events relevant to anti-theft systems
    • B60R25/32—Detection related to theft or to other events relevant to anti-theft systems of vehicle dynamic parameters, e.g. speed or acceleration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/30—Detection related to theft or to other events relevant to anti-theft systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/40—Features of the power supply for the anti-theft system, e.g. anti-theft batteries, back-up power supply or means to save battery power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/40—Features of the power supply for the anti-theft system, e.g. anti-theft batteries, back-up power supply or means to save battery power
    • B60R25/406—Power supply in the remote key
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0808—Diagnosing performance data
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/63—Location-dependent; Proximity-dependent
    • H04W12/64—Location-dependent; Proximity-dependent using geofenced areas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/025—Services making use of location information using location based information parameters
    • H04W4/027—Services making use of location information using location based information parameters using movement velocity, acceleration information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2325/00—Indexing scheme relating to vehicle anti-theft devices
    • B60R2325/10—Communication protocols, communication systems of vehicle anti-theft devices
    • B60R2325/103—Near field communication [NFC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/15—Failure diagnostics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/304—Acceleration sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/0891—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values with indication of predetermined acceleration values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/18—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/63—Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/68—Gesture-dependent or behaviour-dependent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to a portable device and an authentication system including the portable device.
  • Patent Document 1 discloses a portable device used in a system that performs operation control of in-vehicle devices according to the result of code comparison using wireless communication. While stopping the reception operation, the portable device resumes the reception operation only for the state of being carried by the user walking and for a certain period of time thereafter, based on the vibration pattern detected by the acceleration sensor provided in the portable device. The portable device disclosed in Patent Document 1 attempts to save power by performing the reception operation only when the user approaches the vehicle and for a certain period after the user gets on the vehicle.
  • the present disclosure makes it possible to save power in a portable device by using an acceleration sensor, and to prevent the operation for saving power from being continued unnecessarily when the acceleration sensor breaks down.
  • One purpose is to provide a portable device and an authentication system that enable it.
  • a portable device is used in an authentication system that performs authentication to control an authentication target by code matching via short-distance wireless communication, and is between an acceleration sensor and an antenna provided for the authentication target. And a reception stop unit for stopping the reception operation of the communication unit based on the detection result of the acceleration sensor, and the failure detection for detecting the failure of the acceleration sensor And an operation switching unit configured not to stop the reception operation of the communication unit in the reception stop unit when the failure detection unit detects a failure of the acceleration sensor.
  • An authentication system includes a device provided for an authentication target and a portable device carried by a user, and the device provided for the authentication target is between an antenna provided for the authentication target and the mobile device.
  • An authentication system for performing authentication to control an authentication target by code collation via near-field wireless communication, and the portable device includes a communication unit for performing near-field wireless communication between an acceleration sensor and an antenna When the failure of the acceleration sensor is detected by the failure detection unit that detects the failure of the acceleration sensor, the failure detection unit that detects the failure of the acceleration sensor, and the failure detection unit. And an operation switching unit configured not to stop the reception operation of the communication unit in the reception stop unit.
  • the reception stop unit stops the reception operation of the communication unit performing the short distance wireless communication used for code comparison based on the detection result of the acceleration sensor. In comparison, power saving of the portable device becomes possible.
  • the failure detection unit for detecting the failure of the acceleration sensor detects the failure of the acceleration sensor
  • the operation stop unit for stopping the reception operation of the communication unit in the reception stop unit is provided. When the acceleration sensor breaks down, it is possible to prevent the stop of the reception operation for saving power to be continued without waste. As a result, power saving of the portable device can be achieved by using the acceleration sensor, and in the event that the acceleration sensor breaks down, it is possible to prevent the operation for saving the power from being continued unnecessarily. become.
  • FIG. 1 is a diagram showing an example of a schematic configuration of an authentication system
  • FIG. 2 is a view showing an example of a schematic configuration of a vehicle side unit
  • FIG. 3 is a diagram showing an example of a schematic configuration of a verification ECU
  • FIG. 4 is a diagram showing an example of a schematic configuration of a portable device
  • FIG. 5 is a view showing an example of a schematic configuration of an acceleration sensor unit
  • FIG. 6 is a diagram showing an example of the waveform of the acceleration sequentially detected by the acceleration detection unit
  • FIG. 7 is a diagram showing an example of a schematic configuration of a portable device control unit
  • FIG. 1 is a diagram showing an example of a schematic configuration of an authentication system
  • FIG. 2 is a view showing an example of a schematic configuration of a vehicle side unit
  • FIG. 3 is a diagram showing an example of a schematic configuration of a verification ECU
  • FIG. 4 is a diagram showing an example of a schematic configuration of a portable device
  • FIG. 5
  • FIG. 8 is a flowchart showing an example of the flow of failure detection related processing in the portable device
  • FIG. 9 is a diagram showing an example of a schematic configuration of a verification ECU
  • FIG. 10 is a schematic diagram for explaining a signal transmitted by the transmission processing unit
  • FIG. 11 is a diagram showing an example of a schematic configuration of a portable device
  • FIG. 12 is a diagram showing an example of a schematic configuration of a portable device control unit
  • FIG. 13 is a diagram showing an example of the relationship between the distance from the portable device from the antenna for reference outside the vehicle and the RSSI
  • FIG. 14 is a flowchart showing an example of the flow of failure detection related processing in the portable device
  • FIG. 15 is a diagram showing an example of a schematic configuration of a verification ECU
  • FIG. 15 is a diagram showing an example of a schematic configuration of a verification ECU
  • FIG. 16 is a schematic diagram for explaining a signal transmitted by the transmission processing unit
  • FIG. 17 is a diagram showing an example of a schematic configuration of a portable device control unit
  • FIG. 18 is a flowchart showing an example of the flow of failure detection related processing in the portable device
  • FIG. 19 is a flowchart showing an example of the flow of failure detection related processing in the portable device
  • FIG. 20 is a diagram showing an example of a schematic configuration of an acceleration sensor unit
  • FIG. 21 is a diagram showing an example of a schematic configuration of a portable device control unit
  • FIG. 22 is a diagram showing an example of a schematic configuration of an acceleration sensor unit
  • FIG. 23 is a diagram showing an example of a schematic configuration of a portable device control unit.
  • the authentication system 1 includes a vehicle-side unit 2 used in a vehicle Ve and a portable device 3 carried by a user.
  • code verification is performed by short-distance wireless communication between vehicle unit 2 and portable device 3, and when code verification is established, locking and unlocking of the vehicle door and / or start permission of the traveling drive source Have the ability to
  • FIG. 2 is a view showing a schematic configuration of the vehicle side unit 2.
  • the vehicle unit 2 includes a verification ECU 21, an LF transmitter 22, a UHF receiver 23, door antennas 24 a to 24 d, an indoor antenna 25, an antenna outside trunk 26, a body ECU 27, and a power unit ECU 28. .
  • the LF transmission unit 22 transmits a request signal to the portable device 3 by radio waves in the LF band via the LF antennas such as the door antennas 24a to 24d, the indoor antenna 25, and the antenna 26 outside the trunk.
  • the LF band is, for example, a frequency band of 30 kHz to 300 kHz.
  • a communication range in which signals can be transmitted from an LF antenna by radio waves in the LF band corresponds to a short distance wireless communication area where short distance wireless communication can be performed.
  • the request signal is a signal requesting transmission of the identification code from the portable device 3 for code comparison.
  • the door antenna 24a is provided near the vehicle door of the driver's seat
  • the door antenna 24b is provided near the vehicle door on the passenger seat side
  • the door antenna 24c is provided near the vehicle door on the right of the rear seat. Is provided near the vehicle door on the left side of the rear seat.
  • the indoor antenna 25 is provided in the vehicle cabin
  • the outside-trunk antenna 26 is provided in the vicinity of the trunk room door of the vehicle doors.
  • the short distance wireless communication area of the door antenna 24a is limited to the vicinity of the vehicle door of the driver's seat, and the short distance wireless communication area of the door antenna 24b is limited to the vicinity of the vehicle door on the passenger seat side.
  • the short-distance wireless communication area of the present invention is limited to the vicinity of the vehicle door on the right side of the rear seat, and the short-distance wireless communication area of the door antenna 24d is limited to the vicinity of the vehicle door on the left side of the rear seat.
  • the short distance wireless communication area of the indoor antenna 25 is limited to the passenger compartment, and the short distance wireless communication area of the out-of-trunk antenna 26 is limited to the vicinity of the trunk room door. It is assumed that the short distance wireless communication areas of the door antennas 24a to 24d and the antenna outside the trunk 26 extend outside the vehicle Ve.
  • the door antennas 24a to 24d, the indoor antenna 25, and the antenna outside the trunk 26 correspond to the antennas.
  • the UHF receiving unit 23 has a UHF antenna, and receives a response signal transmitted from the portable device 3 in a UHF band radio wave with the UHF antenna.
  • the UHF band is, for example, a frequency band of 300 MHz to 3 GHz.
  • the response signal is a signal including an identification code, which is returned from the portable device 3 in response to the request signal described above.
  • the body ECU 27 performs locking and unlocking of each vehicle door by outputting a drive signal for controlling locking and unlocking of each vehicle door to a door lock motor provided on each vehicle door. Further, a touch sensor provided on an outer door handle of each vehicle door is connected to the body ECU 27, and detects that the outer door handle of each vehicle door is touched by the user. In addition, a courtesy switch for each vehicle door is connected to the body ECU 27 to detect the opening and closing of each vehicle door, and a seating sensor is connected to detect the presence or absence of the occupant sitting on the seat. Do.
  • the power unit ECU 28 is an electronic control unit that controls the internal combustion engine or motor generator of the vehicle Ve, and obtains the internal combustion engine or motor generator of the vehicle Ve when acquiring the start permission signal of the traveling drive source from the verification ECU 21. .
  • the verification ECU 21 includes a processor, a memory, an I / O, and a bus connecting these, and executes a control program stored in the memory to execute various processes related to authentication in the vehicle Ve.
  • the memory is a non-transitory tangible storage medium that non-temporarily stores computer readable programs and data.
  • the non-transitional tangible storage medium is realized by a semiconductor memory or a magnetic disk.
  • the verification ECU 21 includes a transmission processing unit 211, a reception processing unit 212, a registration unit 213, a verification unit 214, a vehicle interior / exterior determination unit 215, a lock and unlock permission unit 216, and a start permission unit 217.
  • the verification ECU 21 corresponds to a device provided for the authentication target.
  • part or all of the functions executed by the verification ECU 21 may be configured as hardware by one or more ICs or the like. Further, some or all of the functional blocks included in the verification ECU 21 may be realized by a combination of software execution by a processor and hardware components.
  • the transmission processing unit 211 transmits a request signal including a vehicle identification code, which is a code for identifying a vehicle, from the door antennas 24a to 24d, the indoor antenna 25, and the antenna outside the trunk 26 via the LF transmission unit 22.
  • the vehicle identification code may be the device ID of the verification ECU 21 mounted on the vehicle, or may be the vehicle ID of the vehicle.
  • the vehicle identification code may be configured to read out and use the one stored in the non-volatile memory of the verification ECU 21.
  • the reception processing unit 212 receives a response signal transmitted from the portable device 3 in a UHF band radio wave in response to the request signal via the UHF reception unit 23.
  • the registration unit 213 is, for example, an electrically rewritable non-volatile memory, and among portable device identification codes that are codes for identifying the portable device 3, the portable device identification code of the portable device 3 of the authorized user is It is registered.
  • the collation unit 214 performs code collation whether the portable device 3 of the transmission source of the response signal received by the reception processing unit 212 is the portable device 3 of the authorized user.
  • the code verification is performed between the portable device identification code included in the response signal received from the portable device 3 and the portable device identification code registered in the registration unit 213.
  • the indoor / outdoor determination unit 215 determines where the portable device 3 is located outside the vehicle interior. As an example, when the request signal is transmitted from the indoor antenna 25, the response signal is received from the portable device 3, so that it is determined that the portable device 3 is located in the vehicle compartment. On the other hand, although the response signal is received from the portable device 3 when the request signal is transmitted from any of the door antennas 24a to 24d and the antenna 26 outside the trunk, the portable device 3 is transmitted when the request signal is transmitted from the indoor antenna 25. Since it did not receive a response signal from the above, it is determined that the portable device 3 is located outside the vehicle.
  • the locking and unlocking permission unit 216 determines that the portable device 3 is located outside the vehicle outside by the inside / outside vehicle interior determination unit 215, and when the code comparison is established by the comparison unit 214, that is, when the vehicle exterior comparison is established.
  • a signal for permitting locking and unlocking of the door is sent to the body ECU 27.
  • the transmission processing unit 211 adopts a configuration in which the request signal is periodically transmitted after locking of the vehicle Ve
  • the following configuration may be employed. First, when locking and unlocking of each vehicle door is permitted, the body ECU 27 starts energization to the touch sensor provided on the outer door handle of each vehicle door, and the standby state where the user can detect the door handle operation by the user. Become.
  • the body ECU 27 detects that the user has touched the touch sensor, the body ECU 27 outputs a drive signal to the door lock motor to lock and unlock each vehicle door. Also, in the case where the transmission processing unit 211 adopts a configuration in which the request signal is transmitted on the trigger that the user has touched the touch sensor provided on the outer door handle, the cancellation of each vehicle door is performed. When the lock is permitted, the body ECU 27 may output a drive signal to the door lock motor to lock and unlock each vehicle door.
  • the start permission unit 217 determines that the portable device 3 is positioned in the vehicle compartment by the inside / outside vehicle interior determination unit 215 and the code verification is established by the verification unit 214, that is, when the in-vehicle verification is established.
  • the start permission signal is sent to the power unit ECU 28.
  • the power unit ECU 28 that has acquired the start permission signal makes it possible to start the internal combustion engine or the motor generator of the vehicle Ve.
  • the portable device 3 includes a battery 31, an LF reception unit 32, a UHF transmission unit 33, an acceleration sensor unit 34, and a portable device control unit 35.
  • the portable device 3 may be, for example, an electronic key of the vehicle Ve.
  • the battery 31 is a power supply that supplies power for operating the portable device 3.
  • the battery 31 may be, for example, a primary battery such as a lithium battery.
  • the LF reception unit 32 receives a request signal transmitted from the vehicle unit 2 by radio waves in the LF band via the LF antenna.
  • the LF receiver 32 corresponds to a communication unit.
  • the UHF transmission unit 33 causes the signal output from the portable device control unit 35 to be transmitted on the UHF band radio wave from the UHF antenna.
  • the acceleration sensor unit 34 detects the acceleration generated by the movement of the portable device 3, and outputs the detection result to the portable device control unit 35. The details of the acceleration sensor unit 34 will be described later.
  • the portable device control unit 35 is an IC including a processor, a memory, etc., a microcomputer, etc., and executes various processes by executing a control program stored in the memory.
  • the memory is a non-transitory tangible storage medium that non-temporarily stores computer readable programs and data.
  • the non-transitional tangible storage medium is realized by a semiconductor memory or a magnetic disk. Details of the portable device control unit 35 will be described later.
  • the acceleration sensor unit 34 includes a communication interface (hereinafter, communication I / F) 341, an acceleration detection unit 342, a sensor control unit 343, and a storage unit 344.
  • the acceleration sensor unit 34 corresponds to an acceleration sensor.
  • the communication I / F 341 connects the acceleration sensor unit 34 and the portable device control unit 35.
  • the acceleration detection unit 342 is a three-axis acceleration sensor that includes three detection axes orthogonal to one another, that is, an X axis, a Y axis, and a Z axis, and measures acceleration acting in each axial direction.
  • the acceleration detection unit 342 is an electrostatic capacitance type MEMS acceleration sensor manufactured using MEMS (Micro Electro Mechanical Systems) technology, which detects an acceleration based on a change in electrostatic capacitance between electrodes.
  • the sensor control unit 343 sequentially stores the acceleration sequentially detected by the acceleration detection unit 342 in the storage unit 344.
  • the storage unit 344 may be, for example, a volatile memory such as a RAM.
  • the sensor control unit 343 may be configured to store the acceleration for each of the three detection axes in the storage unit 344.
  • the sensor control unit 343 determines whether or not the difference ⁇ G (see FIG. 6) between the samplings of the acceleration sequentially detected by the acceleration detection unit 342 exceeds a predetermined threshold. Then, when the threshold is exceeded, the vibration detection history is stored in the storage unit 344 as vibration detected, or a vibration detection signal indicating that the vibration is detected is output to the portable device control unit 35. .
  • FIG. 6 shows the waveform of the acceleration sequentially detected by the acceleration detection unit 342, and the black circles indicate the detection results.
  • the predetermined threshold is a threshold for distinguishing the acceleration estimated to be the vibration caused by the body movement of the user carrying the portable device 3 and is a value that can be arbitrarily set.
  • the sensor control unit 343 may be configured to store the vibration detection history when the acceleration of one of the three detection axes exceeds the predetermined threshold.
  • the difference ⁇ G in acceleration is an example of the amount of change in acceleration.
  • the portable device control unit 35 is a functional block of the registration unit 351, the collation unit 352, the response processing unit 353, the information acquisition unit 354, the reception stop unit 355, the failure detection unit 356, and the operation switching unit 357.
  • the functions executed by the portable device control unit 35 may be configured as hardware by one or a plurality of ICs or the like.
  • some or all of the functional blocks included in the portable device control unit 35 may be realized by a combination of software execution by a processor and hardware components.
  • the registration unit 351 is, for example, an electrically rewritable non-volatile memory, and a vehicle identification code of the vehicle Ve is registered.
  • the collation unit 352 collates the vehicle identification code included in the request signal received by the LF reception unit 32 with the vehicle identification code registered in the registration unit 351.
  • the response processing unit 353 causes the UHF transmission unit 33 to return a response signal including the portable device identification code of the own device when the verification is established by the verification unit 352, while when the code verification is not established, The response signal is not sent back from the UHF transmission unit 33.
  • the portable device identification code of the own device may be configured to read out and use the one stored in advance in the non-volatile memory.
  • the information acquisition unit 354 acquires information from the acceleration sensor unit 34. For example, when the above-mentioned vibration detection signal is output from the acceleration sensor unit 34, this vibration detection signal is acquired. In addition, the vibration detection history stored in the storage unit 344 of the acceleration sensor unit 34 is acquired, or the acceleration for each of the three detection axes (hereinafter, acceleration of three axes) is acquired.
  • the reception stop unit 355 stops the reception operation of the LF reception unit 32 based on the detection result of the acceleration detection unit 342. As an example, the reception stop unit 355 performs the reception operation in the LF reception unit 32 except for a period during which the information acquisition unit 354 acquires a vibration detection signal and a predetermined period after the vibration detection signal is not acquired. Stop it. In other words, the reception stop unit 355 does not stop the reception operation in the LF reception unit 32 during a period during which the information acquisition unit 354 acquires a vibration detection signal and for a certain period after the vibration detection signal is not acquired. . As a result, the reception operation is performed only when the user approaches the vehicle and for a certain period after the user gets in, and power saving of the portable device 3 is enabled.
  • the predetermined period is a value that can be arbitrarily set, and may be, for example, 10 minutes.
  • the acquisition of the vibration detection signal by the information acquisition unit 354 can be replaced with the fact that the amount of change in acceleration detected by the acceleration detection unit 342 exceeds the above-described predetermined threshold.
  • the reception stopping unit 355 may be configured to stop the reception operation by stopping the power supply from the battery 31 to the LF receiving unit 32, for example.
  • the failure detection unit 356 detects a failure of the acceleration sensor unit 34.
  • the failure detection unit 356 is a case where the state in which the amount of change in acceleration detected by the acceleration detection unit 342 does not exceed the predetermined threshold continues for a certain period of time, and the three-axis acceleration detected by the acceleration detection unit 342 When the composite vector of V exceeds the predetermined range based on the gravitational acceleration 1 G, it is detected that the acceleration sensor unit 34 is broken. If the state in which the amount of change in acceleration detected by the acceleration detection unit 342 does not exceed the predetermined threshold continues for a certain period of time, it can be estimated that the portable device 3 is stationary or the acceleration sensor unit 34 is broken.
  • the failure detection unit 356 stores the information in the storage unit 344 via the information acquisition unit 354 when a period during which the information acquisition unit 354 has not acquired a vibration detection signal reaches a predetermined time such as 10 minutes. Read out the acceleration of the 3 axes. Then, the acceleration sensor unit 34 is broken when the magnitude of the composite vector of the read three-axis acceleration exceeds a predetermined range such as 0.5 G to 1.5 G centered on the gravitational acceleration 1 G. It should be detected as The predetermined time may be a time that can be estimated that the portable device 3 is stationary. Further, the predetermined range may be a range in which the magnitude of the combined vector of accelerations of the three axes can be obtained when the vehicle is stationary.
  • the operation switching unit 357 prevents the reception stop unit 355 from stopping the reception operation of the LF reception unit 32. In other words, the reception stop unit 355 does not stop the reception operation of the LF reception unit 32 regardless of the detection result of the acceleration detection unit 342. That is, the reception operation of the LF reception unit 32 is continued.
  • failure detection related processing a flow of processing (hereinafter, failure detection related processing) related to detection of a failure of the acceleration sensor unit 34 in the portable device 3 will be described using the flowchart of FIG. 8.
  • the flowchart of FIG. 8 may be started when power supply from the battery 31 to the portable device control unit 35 of the portable device 3 is started, and may be ended when power supply from the battery 31 is not performed. .
  • the failure detection unit 356 reads the acceleration of the three axes stored in the storage unit 344 via the information acquisition unit 354.
  • S3 when the size of the combined vector of the read three-axis acceleration exceeds a predetermined range centered on the gravitational acceleration 1G (YES in S3), the process proceeds to S5.
  • the predetermined range centered on the gravitational acceleration 1G
  • the failure detection unit 356 returns to S1 and repeats the process without detecting the failure of the acceleration detection unit 342.
  • the operation switching unit 357 does not perform switching to prevent the reception operation of the LF reception unit 32 from being stopped in the reception stop unit 355. That is, the reception stop unit 355 is in a state capable of stopping the reception operation of the LF reception unit 32 according to the detection result of the acceleration detection unit 342.
  • the failure detection unit 356 detects that the acceleration sensor unit 34 is broken.
  • the operation switching unit 357 prevents the reception stop unit 355 from stopping the reception operation of the LF reception unit 32. That is, regardless of the detection result of the acceleration detection unit 342, the reception stop unit 355 does not stop the reception operation of the LF reception unit 32.
  • the failure detection unit 356 continues the detection of the failure of the acceleration sensor unit 34 even when it is detected that the acceleration sensor unit 34 is broken.
  • the operation is performed when the failure detection unit 356 no longer detects a failure of the acceleration sensor unit 34 even if the failure detection unit 356 detects that the acceleration sensor unit 34 is broken once.
  • the switching unit 357 returns so that the reception operation of the LF reception unit 32 in the reception stop unit 355 can be stopped.
  • the temporary attachment of a minute electrode may temporarily cause a failure in acceleration detection.
  • the operation switching unit 357 selects the LF in the reception stop unit 355. It is possible to return so that the reception operation of the reception unit 32 can be stopped. Therefore, it is possible to avoid the problem that the reception stop unit 355 does not stop the reception operation of the LF reception unit 32 despite the recovery from the failure.
  • the reception stop unit 355 based on the detection result of the acceleration detection unit 342 of the acceleration sensor unit 34 by the reception stop unit 355, when the user approaches the vehicle and for a certain period after the user gets into the vehicle. Except for the fact that the reception operation of the LF reception unit 32 is stopped, power saving of the portable device can be achieved as compared with the case where the reception operation is always continued.
  • the failure detection unit 356 detecting a failure of the acceleration sensor unit 34 detects a failure of the acceleration sensor unit 34
  • the reception stop unit 355 does not stop the reception operation of the LF reception unit 32. In the case where the acceleration sensor unit 34 breaks down, it is possible to prevent the stop of the reception operation for performing power saving from being continued unnecessarily.
  • the failure detection unit 356 since the failure detection unit 356 can detect a failure based on the detection result of the acceleration detection unit 342, the failure detection unit 356 detects a failure of the acceleration sensor unit 34. It is possible to reduce the cost of providing an extra mechanical configuration.
  • the present invention is not limited to the mode of detection of failure of the acceleration sensor unit 34 described in the first embodiment, and may be as in the second embodiment described below.
  • the configuration of the second embodiment will be described below.
  • the authentication system 1 of the second embodiment is the authentication of the first embodiment except that the vehicle-side unit 2 includes the verification ECU 21a instead of the verification ECU 21 and that the portable unit 3 includes the portable device 3a instead of the portable device 3. Similar to system 1.
  • the verification ECU 21a is a functional block of a transmission processing unit 211a, a reception processing unit 212, a registration unit 213, a verification unit 214, a vehicle interior / exterior determination unit 215, a lock and unlock permission unit 216, and a start permission unit 217.
  • the verification ECU 21 a is the same as the verification ECU 21 of the first embodiment except that the transmission processing unit 211 a is provided instead of the transmission processing unit 211.
  • the verification ECU 21a corresponds to a device provided for the authentication target.
  • the transmission processing unit 211a transmits a vehicle identification code, which is a code for identifying a vehicle, from the door antennas 24a to 24d, the indoor antenna 25, and the outside trunk antenna 26 via the LF transmission unit 22.
  • Send request signal including.
  • the transmission processing unit 211 a receives the signal strength of the received signal (hereinafter referred to as “following,” in addition to the signal of the failure detection command from the door antennas 24 a to 24 d and the antenna outside the trunk 26 after locking the door when the passenger gets off the vehicle Ve.
  • RSSI Signal strength of the received signal
  • the burst signal for RSSI measurement is hereinafter referred to simply as a burst signal.
  • the transmission processing unit 211a may specify the alighting of the occupant from the vehicle Ve from the detection result of the presence or absence of the occupant sitting on the seat by the body ECU 27 and the detection result of the opening and closing of the vehicle door.
  • the door locking may be specified from the output of the drive signal to the door lock motor in the body ECU 27.
  • the transmission processing unit 211a sequentially transmits request signals from the door antennas 24a to 24d, the indoor antenna 25, and the out-of-trunk antenna 26 after the doors are locked when the passenger gets off the vehicle Ve. Then, the response signal returned from the portable device 3a at the timing according to the timing at which the request signal from the door antennas 24a to 24d or from the antenna outside the trunk 26 (see the exterior verification command in FIG. 10) is transmitted (see the response in FIG. 10) When the code matching (hereinafter referred to as vehicle outside matching) in the matching unit 214 using the portable device identification code included in the response signal is established. Allow door lock. Subsequently, when the body ECU 27 detects that the user has touched the touch sensor provided on the outer door handle, the body ECU 27 performs door locking.
  • vehicle outside matching code matching
  • the transmission processing unit 211a is configured to sequentially transmit a request signal from the door antennas 24a to 24d, the indoor antenna 25, and the antenna outside the trunk 26 using a touch on a touch sensor provided on the outer door handle as a trigger. It is also good.
  • the body ECU 27 may be configured to lock the door when the check of the outside of the room by the check unit 214 is established.
  • the transmission processing unit 211a After door locking, as shown in FIG. 10, the transmission processing unit 211a sends bursts to the request signal as a failure detection command from the antennas for out-of-compartment verification such as the door antennas 24a to 24d or the out-of-trunk antenna 26. Causes the signal to be sent periodically.
  • the transmission processing unit 211a may be configured to periodically transmit the failure detection command and the burst signal until the response signal to the failure detection command is not returned from the portable device 3a.
  • the portable device 3a includes a battery 31, an LF reception unit 32a, a UHF transmission unit 33, an acceleration sensor unit 34, and a portable device control unit 35a.
  • the portable device 3a of the first embodiment is different from the portable device 3 according to the first embodiment except that the portable device 3a includes the LF receiving unit 32a instead of the LF receiving unit 32 and a portable device control unit 35a instead of the portable device control unit 35. Is the same as
  • the LF receiving unit 32 a is the same as the LF receiving unit 32 according to the first embodiment except that the signal strength specifying unit 321 is included.
  • the signal strength specifying unit 321 specifies the RSSI (that is, the received signal strength) of the signal received by the LF receiving unit 32 a using the RSSI circuit or the like.
  • the LF receiver 32 according to the first embodiment may be configured to specify the RSSI.
  • the portable device control unit 35a is the same as the portable device control unit 35 of the first embodiment except that a part of the processing is different. Details of the portable device control unit 35a will be described below.
  • the portable device control unit 35a includes a registration unit 351, a check unit 352, a response processing unit 353, an information acquisition unit 354, a reception stop unit 355a, a failure detection unit 356a, and an operation switching unit 357 as functional blocks.
  • the portable device control unit 35a according to the first embodiment is controlled except that the portable device control unit 35a includes the reception stop unit 355a instead of the reception stop unit 355 and the failure detection unit 356a instead of the failure detection unit 356. It is the same as part 35.
  • the reception stop unit 355a stops the reception operation in the LF reception unit 32a after the grace period based on the detection result of the acceleration detection unit 342.
  • the grace period may be the above-described fixed period after the information acquisition unit 354 does not acquire the vibration detection signal.
  • the change amount of the acceleration detected by the acceleration detection unit 342 may be a fixed period after the threshold value of the change amount does not exceed.
  • the threshold of the amount of change is a threshold for distinguishing the amount of change in acceleration corresponding to the vibration due to the body movement of the user carrying the portable device 3, and is a value that can be set arbitrarily.
  • the reception stop unit 355a and the reception stop unit 355 according to the first embodiment do not stop the reception operation of the LF reception unit 32a after the grace period without fail based on the detection result of the acceleration detection unit 342. It is similar.
  • the failure detection unit 356a detects a failure of the acceleration sensor unit 34 by a method different from the failure detection unit 356 of the first embodiment.
  • the failure detection unit 356a is a burst signal, which is identified by the signal strength identification unit 321 before passing the above-mentioned grace period, and which is sequentially transmitted from the antenna for checking outside the vehicle after locking the door at the time of getting off the passenger from the vehicle Ve.
  • the RSSI falls below a predetermined value
  • the threshold value of the amount of change may be, for example, the above-mentioned predetermined threshold value for discriminating the acceleration estimated to be vibration caused by the user's body movement.
  • the RSSI of the signal transmitted from the antenna for outdoor verification is in a relation that the intensity is attenuated as the distance of the portable device 3a from the antenna for outdoor verification is longer, as shown in FIG. . Therefore, after the door lock is started and the portable device 3a starts receiving the burst signal, the user carrying the portable device 3a is separated from the vehicle Ve by a certain distance or more after the RSSI of the burst signal falls below the predetermined value. Corresponds to moving to the same position. In such a situation where the user carrying the portable device 3a is moving, if there is no failure, the acceleration detecting unit 342 should detect the amount of change in acceleration greater than the above-mentioned threshold.
  • the acceleration detection unit 342 detects no change in the acceleration greater than the above-described threshold value. Since it detects as having a failure, it becomes possible to detect a failure of the acceleration sensor unit 34 more accurately.
  • the failure detection unit 356a performs the following series of processing before the grace period described above is exceeded. First, the failure detection unit 356a determines that the reception signal strength of the burst signal sequentially transmitted from the exterior verification antenna after locking the door at the time of getting off the vehicle from the vehicle Ve specified by the signal strength specification unit 321 has a predetermined value. It is determined whether it has fallen below.
  • the predetermined value may be any value that can be set arbitrarily as long as the user carrying the portable device 3a can be estimated to have moved away from the vehicle Ve.
  • the vibration detection history up to the present after the reception of the burst signal is started after the door is locked. Get it.
  • vibration is detected in the vibration detection history acquired by the information acquisition unit 354, it is assumed that the acceleration sensor unit 34 is not broken. On the other hand, when the vibration is not detected, it is detected that the acceleration sensor unit 34 is broken.
  • the flowchart of FIG. 14 may be configured to be started after the door is locked when the occupant gets off the vehicle Ve.
  • the flowchart of FIG. 14 may be configured to be started after the door is locked when the occupant gets off the vehicle Ve.
  • door locking is performed when the occupant of the vehicle Ve gets off. Should be identified.
  • the sensor control unit 343 erases the vibration detection history stored in the storage unit 344. This is because the detection history after the start of reception of the burst signal after locking the door when the occupant gets off the vehicle Ve is narrowed down and stored in the storage unit 344.
  • the process proceeds to S23. On the other hand, when the burst signal is not received by the LF receiving unit 32a (NO in S22), the process of S22 is repeated.
  • the signal strength specifying unit 321 specifies the RSSI of the burst signal received in S22.
  • the process proceeds to S25. On the other hand, if it is not equal to or less than the predetermined value (NO in S24), the process returns to S22 to repeat the process.
  • the sensor control unit 343 reads the vibration detection history stored in the storage unit 344 and outputs it to the portable device control unit 35a, and the information acquisition unit 354 acquires this vibration detection history. Then, the failure detection unit 356a confirms this vibration detection history.
  • the vibration detection history is a vibration detection history from when reception of the burst signal after locking of the door at the time of getting off the vehicle Ve from the reception of the burst signal until the RSSI of the burst signal becomes equal to or less than a predetermined value.
  • the failure detection unit 356a ends the failure detection related process without detecting the failure of the acceleration sensor unit 34.
  • the failure detection unit 356a detects that the acceleration sensor unit 34 is broken.
  • the operation switching unit 357 does not stop the reception operation of the LF reception unit 32a in the reception stop unit 355a, that is, continues the reception operation of the LF reception unit 32a, and the failure detection related End the process.
  • the process may be repeated by returning to S22 until the above-mentioned grace period elapses. That is, even when the failure detection unit 356a detects that the acceleration sensor unit 34 is broken, the detection of the failure of the acceleration sensor unit 34 may be continued. Then, even if the failure detection unit 356a detects that the acceleration sensor unit 34 is broken once even when the failure detection unit 356a does not detect a failure of the acceleration sensor unit 34, the operation is performed.
  • the switching unit 357 may be configured to return so that the reception operation of the LF reception unit 32a in the reception stop unit 355a can be stopped.
  • the configuration of the second embodiment is the same as the configuration of the first embodiment except that the aspect of detection of a failure of the acceleration sensor unit 34 is different, so that the portable device of the second embodiment is also portable.
  • Power saving of 3a can be realized by using the acceleration sensor unit 34, and in the event that the acceleration sensor unit 34 breaks down, it is possible not to continue the operation for performing the power saving in vain. become.
  • the failure detection unit 356a can detect a failure based on the detection result of the acceleration detection unit 342. It is possible to reduce the cost of providing an extra mechanical configuration for detecting the
  • the acceleration detecting unit 342 does not detect the amount of change in acceleration greater than the above-mentioned threshold value. Since the sensor unit 34 is detected as having a failure, it is possible to detect the failure of the acceleration sensor unit 34 more accurately.
  • the authentication system 1 of the third embodiment is the authentication of the first embodiment except that the vehicle-side unit 2 includes the verification ECU 21b instead of the verification ECU 21 and that the portable unit 3 includes the portable device 3b instead of the portable device 3. Similar to system 1.
  • the verification ECU 21 b includes a transmission processing unit 211 b, a reception processing unit 212, a registration unit 213, a verification unit 214, a vehicle interior / exterior determination unit 215, a lock and unlock permission unit 216, and a start permission unit 217.
  • the verification ECU 21 b is the same as the verification ECU 21 according to the first embodiment except that the transmission processing unit 211 b is provided instead of the transmission processing unit 211.
  • the verification ECU 21b corresponds to a device provided for the authentication target.
  • the transmission processing unit 211b transmits a vehicle identification code, which is a code for identifying a vehicle, from the door antennas 24a to 24d, the indoor antenna 25, and the outside trunk antenna 26 via the LF transmission unit 22.
  • Send request signal including.
  • the transmission processing unit 211 b is configured to transmit the indoor / outdoor check command as a request signal from the door antennas 24 a to 24 d and the antenna 26 outside the trunk and the indoor / outdoor check command as a request signal from the indoor antenna 25 on the portable device 3 b side. Send in a distinguishable manner. As an example, it may be configured to include information for discriminating whether it is a check command outside a vehicle or a check command inside a vehicle and transmitted.
  • the door antennas 24a to 24d and the antenna outside the trunk 26 will be referred to as an antenna for outdoor checkup
  • the indoor antenna 25 will be referred to as an antenna for indoor checkup.
  • the transmission processing unit 211b causes the antenna for external verification to periodically transmit the external verification command from outside the vehicle after locking the door at the time of getting off the passenger from the vehicle Ve.
  • the locking and unlocking permission unit 216 permits the door locking.
  • the body ECU 27 detects that the user has touched the touch sensor provided on the outer door handle, the body ECU 27 performs door locking.
  • the transmission processing unit 211b causes the out-of-compartment verification antenna to transmit the out-of-compartment verification command when the user touches the touch sensor provided on the outer door handle as a trigger, and the out-of-compartment verification is established.
  • the body ECU 27 may be configured to lock the door.
  • the transmission processing unit 211b performs in-vehicle verification from the in-vehicle verification antenna in order to detect confinement of the portable device 3b in the vehicle interior of the vehicle Ve after locking the door when the occupant gets off the vehicle Ve. It may be configured to send a command.
  • the reception processing unit 212 receives a response signal sent back from the portable device 3b in response to the in-room verification command, and the code verification in the verification unit 214 using the portable device identification code included in the response signal
  • the lock and unlock permission unit 216 does not permit the door lock and the door lock may not be performed.
  • the transmission processing unit 211b causes the antenna for interior verification to periodically transmit the interior verification command, and when the interior verification is established, the start is permitted.
  • the unit 217 sends a start permission signal of the traveling drive source to the power unit ECU 28 so that the traveling drive source can be started.
  • the transmission processing unit 211b may identify the door unlocking from the output of the drive signal to the door lock motor in the body ECU 27, and may identify the opening and closing of the door from the signal of the courtesy switch.
  • the transmission processing unit 211b transmits an in-vehicle verification command from the in-vehicle verification antenna and the in-vehicle verification is established.
  • the start permission signal of the traveling drive source may be sent to the power unit ECU 28.
  • the authentication system 1 of the third embodiment when the user carrying the portable device 3b moves and approaches the vehicle Ve and tries to get on the vehicle Ve, as shown in FIG.
  • An exterior verification command is transmitted from the exterior verification antenna, and exterior verification is performed.
  • the vehicle exterior verification is established and the door of the vehicle Ve is unlocked, and the user gets into the vehicle Ve and tries to start the traveling drive source of the vehicle Ve, as shown in FIG.
  • the indoor verification command is transmitted from the indoor verification antenna, and the indoor verification is performed.
  • the vehicle exterior verification command is transmitted from the exterior verification antenna and the vehicle is In addition to the outdoor verification, the indoor verification command is transmitted from the in-vehicle verification antenna to perform the in-vehicle verification.
  • the portable device 3 b includes a battery 31, an LF receiving unit 32, a UHF transmitting unit 33, an acceleration sensor unit 34, and a portable device control unit 35 b.
  • the portable device 3 b is the same as the portable device 3 of the first embodiment except that the portable device control unit 35 b is provided instead of the portable device control unit 35.
  • the portable device control unit 35b is the same as the portable device control unit 35 of the first embodiment except that some processes are different. Details of the portable device control unit 35b will be described below.
  • the portable device control unit 35 b includes a registration unit 351, a check unit 352, a response processing unit 353, an information acquisition unit 354, a reception stop unit 355 b, a failure detection unit 356 b, and an operation switching unit 357 as functional blocks.
  • the portable device control unit 35 b controls the portable device according to the first embodiment except that the portable device control unit 35 b includes the reception stop unit 355 b instead of the reception stop unit 355 and the failure detection unit 356 b instead of the failure detection unit 356. It is the same as part 35.
  • the reception stop unit 355b stops the reception operation of the LF reception unit 32 after the grace period based on the detection result of the acceleration detection unit 342. Note that the reception stop unit 355b and the reception stop unit 355 of the first embodiment do not stop the reception operation of the LF reception unit 32 after the grace period without fail based on the detection result of the acceleration detection unit 342. It is similar.
  • the failure detection unit 356 b detects a failure of the acceleration sensor unit 34 by a method different from that of the failure detection unit 356 of the first embodiment.
  • the failure detection unit 356b detects the amount of change in acceleration detected by the acceleration detection unit 342 after the checkout outside the vehicle when the checkout is performed after the checkout outside the vehicle before the grace period described above is exceeded. It is determined whether or not there is a state in which the threshold value has been exceeded, and if it is determined that there is no state in which the threshold value has been exceeded, it is detected that the acceleration sensor unit 34 is broken.
  • the threshold value of the amount of change may be, for example, the above-mentioned predetermined threshold value for discriminating the acceleration estimated to be vibration caused by the user's body movement.
  • the situation in which the interior verification is performed after the exterior verification corresponds to the situation in which the user carrying the portable device 3b moves and gets on the vehicle Ve.
  • the acceleration detecting unit 342 should detect the amount of change in acceleration that is equal to or more than the above-mentioned threshold.
  • the acceleration detection unit 342 detects no change in the acceleration greater than the above-described threshold value. Since it detects as having a failure, it becomes possible to detect a failure of the acceleration sensor unit 34 more accurately.
  • the failure detection unit 356b performs the following series of processing before the grace period described above is exceeded.
  • the failure detection unit 356 b causes the information acquisition unit 354 to acquire a vibration detection history from the reception of the exterior verification command by the LF reception unit 32 to the reception of the interior verification command by the LF reception unit 32.
  • vibration is detected in the vibration detection history acquired by the information acquisition unit 354, it is assumed that the acceleration sensor unit 34 is not broken.
  • the vibration is not detected, it is detected that the acceleration sensor unit 34 is broken.
  • the failure detection unit 356b changes the amount of acceleration detected by the acceleration detection unit 342 after external / external verification when external verification is performed after internal verification before the above-mentioned grace period is exceeded. However, it may be determined whether or not there is a state in which the threshold value of the variation amount is exceeded, and it is determined that the acceleration sensor unit 34 is broken when it is determined that there is no state in which the threshold value is exceeded.
  • the threshold value of the amount of change may be, for example, the above-mentioned predetermined threshold value for discriminating the acceleration estimated to be vibration caused by the user's body movement.
  • the situation in which the checkout outside the vehicle cabin is performed after the checkout inside the vehicle corresponds to a situation in which the user carrying the portable device 3b gets off the vehicle Ve.
  • the acceleration detecting unit 342 should detect the amount of change in acceleration that is equal to or more than the above-mentioned threshold.
  • the acceleration detection unit 342 detects no change in the acceleration greater than the above-described threshold value. Since it detects as having a failure, it becomes possible to detect a failure of the acceleration sensor unit 34 more accurately.
  • the failure detection unit 356b may be configured to perform the following series of processing before the grace period described above is exceeded.
  • the failure detection unit 356b causes the information acquisition unit 354 to acquire a vibration detection history from the reception of the interior verification command by the LF reception unit 32 to the reception of the exterior verification command by the LF reception unit 32.
  • vibration is detected in the vibration detection history acquired by the information acquisition unit 354.
  • the acceleration sensor unit 34 is not broken.
  • the vibration is not detected, it is detected that the acceleration sensor unit 34 is broken.
  • the sensor control unit 343 erases the vibration detection history stored in the storage unit 344. This is to narrow down the detection history after collation outside the vehicle and store it in the storage unit 344.
  • S42 when the vehicle interior verification command is received by the LF receiving unit 32 (YES in S42), the process proceeds to S43. On the other hand, if the vehicle interior verification command is not received by the LF reception unit 32 (NO in S42), the process of S42 is repeated.
  • the sensor control unit 343 reads the vibration detection history stored in the storage unit 344 and outputs it to the portable device control unit 35b, and the information acquisition unit 354 acquires the vibration detection history. Then, the failure detection unit 356 b confirms this vibration detection history.
  • the vibration detection history is a vibration detection history from the time the vehicle exterior verification is performed to the time the vehicle interior verification is performed.
  • the failure detection unit 356b ends the failure detection related process without detecting the failure of the acceleration sensor unit 34.
  • the failure detection unit 356b detects that the acceleration sensor unit 34 is broken.
  • the operation switching unit 357 causes the reception stop unit 355b not to stop the reception operation of the LF reception unit 32, and ends the failure detection related process.
  • the processing may be returned to S42 and the processing may be repeated until the grace period described above elapses after the processing of S47. That is, even when the failure detection unit 356 b detects that the acceleration sensor unit 34 is broken, the detection of the failure of the acceleration sensor unit 34 may be continued. The operation is performed when the failure detection unit 356b no longer detects a failure of the acceleration sensor unit 34, even if the failure detection unit 356b once detects that the acceleration sensor unit 34 is broken.
  • the switching unit 357 may be configured to return so that the reception operation of the LF reception unit 32 in the reception stop unit 355b can be stopped.
  • the flowchart in FIG. 19 may be configured to be started when the LF reception unit 32 receives a vehicle interior verification command.
  • the sensor control unit 343 erases the vibration detection history stored in the storage unit 344. This is to narrow down the detection history after the vehicle interior verification and store it in the storage unit 344.
  • the process proceeds to S63. On the other hand, if the LF reception section 32 has not received this exterior check command (NO in S62), the processing of S62 is repeated.
  • the sensor control unit 343 reads the vibration detection history stored in the storage unit 344 and outputs it to the portable device control unit 35b, and the information acquisition unit 354 acquires this vibration detection history. Then, the failure detection unit 356 b confirms this vibration detection history.
  • the vibration detection history is a vibration detection history from the time of the in-vehicle verification to the time of the out-of-vehicle verification.
  • the failure detection unit 356b ends the failure detection related process without detecting the failure of the acceleration sensor unit 34.
  • the failure detection unit 356b detects that the acceleration sensor unit 34 is broken.
  • the operation switching unit 357 causes the reception stop unit 355b not to stop the reception operation of the LF reception unit 32, and ends the failure detection related process.
  • the process may be returned to S62 and the process may be repeated after the process of S67 until the grace period described above elapses. That is, even when the failure detection unit 356 b detects that the acceleration sensor unit 34 is broken, the detection of the failure of the acceleration sensor unit 34 may be continued. The operation is performed when the failure detection unit 356b no longer detects a failure of the acceleration sensor unit 34, even if the failure detection unit 356b once detects that the acceleration sensor unit 34 is broken.
  • the switching unit 357 may be configured to return so that the reception operation of the LF reception unit 32 in the reception stop unit 355b can be stopped.
  • either the process of the flowchart of FIG. 18 or the process of the flowchart of FIG. 19 may be performed, or only one of them may be performed. If the process of the flowchart of FIG. 18 and the process of the flowchart of FIG. 19 are both performed, for example, the process of S61 of the flowchart of FIG. 19 is started when the flowchart of FIG. And it is sufficient. Alternatively, the processing of the flowchart of FIG. 19 may be performed after the processing of S45 of the flowchart of FIG. 18, while the processing of the flowchart of FIG. 19 may not be performed after the processing of S47 of the flowchart of FIG.
  • the configuration of the third embodiment is the same as the configuration of the first embodiment except that the aspect of detection of a failure of the acceleration sensor unit 34 is different, so that the portable device of the third embodiment is also portable. Power saving of 3b can be realized by using the acceleration sensor unit 34, and when the acceleration detecting unit 342 breaks down, it is possible to prevent the operation for saving the power from being continued unnecessarily. become.
  • the failure detection unit 356b can detect a failure based on the detection result of the acceleration detection unit 342. Therefore, the failure of the acceleration detection unit 342 It is possible to reduce the cost of providing an extra mechanical configuration for detecting the
  • the acceleration detecting unit 342 does not detect the change amount of the acceleration larger than the above-mentioned threshold, the acceleration Since the sensor unit 34 is detected as having a failure, it is possible to detect the failure of the acceleration sensor unit 34 more accurately.
  • the present invention is not limited to the mode of detection of failure of the acceleration sensor unit 34 described in the first to third embodiments, and may be as in the following fourth embodiment.
  • the configuration of the fourth embodiment will be described below.
  • the authentication system 1 of the fourth embodiment is the same as the authentication system 1 of the first embodiment except that the portable device 3 c is included instead of the portable device 3.
  • the portable device 3c includes a battery 31, an LF reception unit 32, a UHF transmission unit 33, an acceleration sensor unit 34c, and a portable device control unit 35c.
  • the portable device 3c according to the first embodiment is different from the portable device 3 according to the first embodiment except that the portable device 3c includes the acceleration sensor unit 34c instead of the acceleration sensor unit 34 and the portable device control unit 35c instead of the portable device control unit 35.
  • the portable device control unit 35c is the same as the portable device control unit 35 of the first embodiment except that a part of the processing is different. Details of the portable device control unit 35c will be described below.
  • the acceleration sensor unit 34c includes a communication I / F 341, an acceleration detection unit 342c, a sensor control unit 343c, and a storage unit 344.
  • the acceleration sensor unit 34c according to the first embodiment is different from the acceleration sensor unit 34c in that the acceleration sensor unit 34c includes the acceleration detection unit 342c instead of the acceleration detection unit 342 and the sensor control unit 343c instead of the sensor control unit 343. Is the same as The acceleration sensor unit 34c corresponds to an acceleration sensor.
  • the acceleration detection unit 342c is an electrostatic capacitance type MEMS acceleration sensor that detects an acceleration based on a change in electrostatic capacitance between the electrodes, similarly to the acceleration detection unit 342 of the first embodiment. Further, the acceleration detection unit 342c is configured to be able to perform a self test for confirming an operation by forcibly applying a voltage. As an example, a voltage is applied to the opposing electrode of the acceleration detection unit 342c to force attraction or repulsion between the electrodes, and the presence or absence of a failure can be detected from a change in capacitance. It is sufficient to have the configuration.
  • the sensor control unit 343c is the same as the sensor control unit 343 according to the first embodiment except that the above-described self test is performed on the acceleration detection unit 342c.
  • the portable device control unit 35c includes a registration unit 351, a check unit 352, a response processing unit 353, an information acquisition unit 354, a reception stop unit 355, a failure detection unit 356c, and an operation switching unit 357 as functional blocks.
  • the portable device control unit 35 c is the same as the portable device control unit 35 of the first embodiment except that a failure detection unit 356 c is provided instead of the failure detection unit 356.
  • the failure detection unit 356 c detects a failure of the acceleration sensor unit 34 c by a method different from that of the failure detection unit 356 of the first embodiment.
  • the failure detection unit 356 c detects a failure of the acceleration sensor unit 34 c by the above-described self test.
  • the failure detection unit 356c may be configured to send instructions to the sensor control unit 343c one by one to execute a self test, acquire a result of the self test, and detect a failure. Alternatively, the failure detection unit 356c may sequentially acquire the result of the self test sequentially executed by the sensor control unit 343c without an instruction from the failure detection unit 356c to detect a failure.
  • the self test is performed immediately before the reception stop unit 355 stops the reception operation after a predetermined time has elapsed since the information acquisition unit 354 does not acquire the vibration detection signal It is preferable that the configuration be performed to detect a failure.
  • the failure detection unit 356c continues the detection of the failure of the acceleration sensor unit 34c, and the failure detection unit 356c causes the failure of the acceleration sensor unit 34c.
  • the operation switching unit 357 may be configured to return so that the reception operation of the LF reception unit 32 in the reception stop unit 355 can be stopped.
  • the configuration of the fourth embodiment is the same as the configuration of the first embodiment except that the aspect of detection of a failure of the acceleration sensor unit 34c is different, so that the portable device of the fourth embodiment is also portable. Power saving of 3c can be realized by using the acceleration sensor unit 34c, and in the event of failure of the acceleration sensor unit 34c, an operation for performing power saving can be prevented from being continued unnecessarily. become.
  • the present invention is not limited to the failure detection mode of the acceleration sensor unit 34 described in the first to fourth embodiments, and may be as in the following fifth embodiment.
  • the configuration of the fifth embodiment will be described below.
  • the authentication system 1 of the fifth embodiment is the same as the authentication system 1 of the first embodiment except that the portable device 3 d is included instead of the portable device 3.
  • the portable device 3d includes a battery 31, an LF reception unit 32, a UHF transmission unit 33, an acceleration sensor unit 34d, and a portable device control unit 35d.
  • the portable device 3d according to the first embodiment is different from the portable device 3 according to the first embodiment except that the portable device 3d includes the acceleration sensor unit 34d instead of the acceleration sensor unit 34 and the portable device control unit 35d instead of the portable device control unit 35.
  • the portable device control unit 35d is the same as the portable device control unit 35 according to the first embodiment except that some processes are different. Details of the portable device control unit 35d will be described below.
  • the acceleration sensor unit 34 d includes a communication I / F 341, an acceleration detection unit 342, a sensor control unit 343 d, and a storage unit 344.
  • the acceleration sensor unit 34d is the same as the acceleration sensor unit 34 of the first embodiment except that the sensor control unit 343d is provided instead of the sensor control unit 343.
  • the acceleration sensor unit 34d corresponds to an acceleration sensor in the claims.
  • the sensor control unit 343d stores the acceleration detected by the acceleration detection unit 342 in a specific memory address of the storage unit 344 and reads the acceleration stored for confirmation from the storage unit 344 in the first embodiment.
  • the portable device control unit 35d includes a registration unit 351, a check unit 352, a response processing unit 353, an information acquisition unit 354, a reception stop unit 355, a failure detection unit 356d, and an operation switching unit 357 as functional blocks.
  • the portable device control unit 35d is the same as the portable device control unit 35 of the first embodiment except that a failure detection unit 356d is provided instead of the failure detection unit 356.
  • the failure detection unit 356d detects a failure of the acceleration sensor unit 34d by a method different from that of the failure detection unit 356 of the first embodiment.
  • the failure detection unit 356d detects a failure of the acceleration sensor unit 34d based on an abnormality in communication with the acceleration sensor unit 34d.
  • the failure detection of the acceleration sensor unit 34d may be performed. For example, when the detection result of the acceleration detection unit 342 is written to a specific memory address of the storage unit 344 and read by the sensor control unit 343d, for example, a value different from the written value is output. It may be assumed that the output from the acceleration sensor unit 34d can not be normally obtained when the output is not present.
  • the failure detection unit 356d continues the detection of the failure of the acceleration sensor unit 34d, and the failure detection unit 356d detects the failure of the acceleration sensor unit 34d.
  • the operation switching unit 357 may be configured to return so that the reception operation of the LF reception unit 32 in the reception stop unit 355 can be stopped.
  • the configuration of the fifth embodiment is the same as the configuration of the first embodiment except that the aspect of detection of a failure of the acceleration sensor unit 34 d is different, so even the configuration of the fifth embodiment is a portable device. Power saving of 3d can be achieved by using the acceleration sensor unit 34d, and in the event of failure of the acceleration sensor unit 34d, it is possible not to continue the operation for saving power in vain. become.
  • the acceleration sensor unit 34, 34c, 34d is configured to detect the vibration based on the amount of change in acceleration, but this is not necessarily the case.
  • the portable device control unit 35, 35a, 35b, 35c, 35d may be configured to detect vibration using a result based on the amount of change in acceleration detected on the acceleration sensor units 34, 34c, 34d. .
  • the change amount of the acceleration exceeding a predetermined threshold may be detected.
  • the authentication system 1 is applied to a vehicle.
  • the authentication system 1 may be applied to a vehicle other than a vehicle.
  • the present invention may be applied to a house, a facility, etc., and may be used for authentication of locking and unlocking of a door of a house, a facility, etc.
  • the configuration using the capacitance type MEMS acceleration sensor as the acceleration detection units 342 and 342c has been exemplified.
  • electrostatics are used.
  • An acceleration sensor other than the capacitive MEMS acceleration sensor may be used.
  • each step is expressed, for example, as S1. Furthermore, each step may be divided into multiple sub-steps, while multiple steps may be combined into one step.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
PCT/JP2018/031393 2017-10-19 2018-08-24 携帯機及び認証システム WO2019077880A1 (ja)

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KR1020207010778A KR102339698B1 (ko) 2017-10-19 2018-08-24 휴대기 및 인증 시스템
DE112018004657.5T DE112018004657T5 (de) 2017-10-19 2018-08-24 Mobile vorrichtung und authentifizierungssystem
US16/822,789 US11390251B2 (en) 2017-10-19 2020-03-18 Mobile device and authentication system

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JP7091728B2 (ja) * 2018-03-09 2022-06-28 トヨタ自動車株式会社 携帯機および車両
JP2023042216A (ja) * 2021-09-14 2023-03-27 株式会社東海理化電機製作所 通信装置
DE102021129489A1 (de) * 2021-11-12 2023-05-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Personalisierungsverfahren für ein Kraftfahrzeug, sowie ein Datenfreigabeverfahren für ein Backend

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KR102339698B1 (ko) 2021-12-16
JP2019073251A (ja) 2019-05-16
US11390251B2 (en) 2022-07-19
DE112018004657T5 (de) 2020-06-04
US20200216028A1 (en) 2020-07-09
KR20200047719A (ko) 2020-05-07

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